Protecting Yourself from the West Nile Virus

This week the City was notified by the San Gabriel Valley Mosquito & Vector Control District that a dead crow testing positive for West Nile Virus (WNV) was found in Sierra Madre. However, the District emphasized that does not mean the virus was contracted in Sierra Madre.

Warmer temperatures provide ideal conditions for WNV amplification and transmission. Residents are encouraged to report dead crows or squirrels immediately to the State hotline at 1-877-968-2473 or complete the form online at We also urge our residents to call the District to report any mosquito activity. The San Gabriel Valley Mosquito & Vector Control District is a public health agency dedicated to the control of mosquito and other vector-borne diseases. The District can be reached at 626-814-9466 or on the web at Please provide your telephone number or email address in the event that additional information is needed.

Throughout the summer, basic protective measures should be followed:

  • DRAIN: Check properties weekly and remove all sources of standing water. Report ‘green’ inoperable pools or other sources of standing water to the District
  • DAWN AND DUSK: Wear effective repellents if outdoors when mosquitoes are present (between dusk and dawn)
  • DEFEND: Ensure doors and windows are properly screened